21 加法 11 等于多少？
21 + 11 = 32
21加法11 等于 32
竖式演算
验算
- 用减法验算：32 − 11 = 21
- 用减法验算：32 − 21 = 11
相关题目
21 + 10 = 31
21 + 12 = 33
21 + 13 = 34
21 + 9 = 30
21 + 14 = 35
21 + 8 = 29
21 + 15 = 36
21 + 7 = 28
20 + 11 = 31
22 + 11 = 33
19 + 11 = 30
23 + 11 = 34
24 + 11 = 35
18 + 11 = 29
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2 + 30 = 32
3 + 29 = 32
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5 + 27 = 32
6 + 26 = 32
17 + 80 = 97
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44 + 3 = 47
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40 + 44 = 84
42 + 51 = 93
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76 - 44 = 32